It looks like balbes150 used an outdated kernel config for G12 image and didn't enable sound drivers.
You can try using this image (universal image for S905 and S905X2, remember to choose device tree): (removed)
Wired connection came up.
Audio is greyed out and showing BT/pulse as above.
Could not connect to LibreElec Repository.
Also USB slot problem.
Unfortunately worse than most recent balbes150 Aarch64 image